Simple preschool science

We have super chemistry activity for your little ones this Halloween! We boiled up some red cabbage water, and used lemon juice and vinegar to change it’s colour! More than that, bicarbonate of soda in water with some dish soap changed the colour again and creates a fizzy foam! Here is a link to a video demo.

The acidic lemon juice or vinegar turns the purple cabbage water (an indicator) pink! Bicarbonate of soda (baking soda) in water turns it blue! Put both in and you have a fizzy neutralisation reaction that produces salty water and releases carbon dioxide bubbles! The magic ingredient is some dish soap in the bicarbonate of soda, causing a
foam and your cauldron to bubble over!

We had loads of fun chanting spells and adding spiders a fogs to our potions!